Cedar Siding Corner Flashing

Building siding flashing finish details for building corners.

Cedar siding corner flashing.

Corner boards are applied to the sheathing with siding fitting tightly against the narrow edge of the boards allowing for expansion and an adequate caulking bead. Width is a matter of taste and proper proportion. Otherwise it is possible for water to wick up the shingles and into the wall. This aluminum corner is for hardboard siding measuring up to 1 2 thick.

The 122 series corners are also available in copper or stainless steel by special order only and available in a wide variety of lengths and flange widths to cover most styles of wood siding. Outside aluminum siding corners in different sizes. Thickness of the corner board will depend on the thickness of the siding. Face width 1 3 4 per side at the bottom tapering to 1 1 4 at the top.

Flashing must be overlapped by the moisture barrier. The most common are 3 4 inch or 1 1 4 inches thick. Edge strip for corners. Use a felt paper spline wrapped around the corner and extending 6 inches beyond the corner board to protect the joints where the siding meets the corner boards see figure 1 5 at left.

Flashing should be made from a non corrosive material and should extend a minimum of 2 vertically up the wall. These siding corners provide both stability and protection while giving a seamless look to hardboard siding. The base of this outside siding corner is 1 11 16 wide from center to outside edge. These pieces are used to protect the wood that is exposed after lap siding has been installed.

122 series corners are designed primarily for wood siding. This aluminum trim is a great choice for siding corners lightweight yet durable.